Ceki Gulcu resolved Bug LOGBACK-809 as Won't Fix
This is a known issue. Please see the docs for %line [1]. Quoting the docs:

  Generating the line number information is not particularly fast. Thus, its use should be avoided
  unless execution speed is not an issue.

[1] http://logback.qos.ch/manual/layouts.html#line
Change By: Ceki Gulcu (14/Mar/13 11:52 PM)
Status: Open Resolved
Resolution: Won't Fix
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